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Re: Unusual Capacitor takes life
Subject: Re: Unusual Capacitor takes life
Date: Wed, 11 Jun 1997 12:13:14 -0500
From: David Huffman <huffman-at-FNAL.GOV>
To: Tesla List <tesla-at-pupman-dot-com>
Some addition information.
The capacitor actually weighs in at 43#, ugh. Capacitance is 18nF
with a D=0.010 Q=100 at 1000Hz using an HP LRC meter. I don't know
what 'D' is, but I don't think it is the loss factor?
I hope to get measurements for comparison of the doorknobs I was
using.
My setup has exceeded the space limits in my basement. Next stop the
garage, just have to remember to unplug the openers.
Dave
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-poodle.pupman-dot-com
> Subject: Unusual Capacitor takes life
> Date: Monday, June 09, 1997 9:30 PM
>
> Subject: Unusual Capacitor takes life
> Date: Mon, 09 Jun 1997 13:21:54 -0500
> From: David Huffman <huffman-at-FNAL.GOV>
> To: Tesla List <tesla-at-pupman-dot-com>
>
>
> Hi Bert H. & Fellow Coilers,
> Many months ago I started a capacitor, this weekend it took its
first
> cycles of charge.
> The capacitor uses 18 ceramic microwave oven bottoms 1/8" thick and
> about 10" x 12" for the dielectric. I got them from a surplus store
> for $1/ea. Using aluminum flashing for plates and trying the sides
> together I ran the leads out the top of a steel box which was
silver
> soldered together. The whole unit is about 3-1/2" x 14" x 17" and
> weights about 30lbs. Oil was added and allowed to stand for a week.
> Capacitance is about 16nF.
> I placed the capacitor on the only working coil I have and it works
> fairly well. The tune is now much sharper and the connections and
> spark gap heat up faster, although this may be inconsequential.
> The thoughts were that the ceramic would hold off the voltage and
> dielectric loss might be low since it is used in a microwave.
> At some point I will build a poly cap and make a comparison with
this
> unique device.
> Dave Huffman
>